This is the LRP ZR.28R Spec. 3 Nitro Competition Engine with Pull Starter.   
                                                                               
   **Additional Technical Info Will Be Added When It Becomes Available.**      
                                                                               
FEATURES: Designed for high-competition monster truck applications             
          VTEC competition slide valve carburetor with 9mm venturi             
          Universal fit - fits all major .21-.25 engine mounts                 
          LRP CoolDownMax cylinder head with new cooling fin arrangement for   
            improved cooling                                                   
          ABC piston and liner construction "A"luminum piston fitted to a      
            "B"rass cylinder liner that is "C"hrome plated                     
          XTEC T6 crankcase                                                    
          8+1 ports (8 transfer and 1 exhaust port)                            
          13mm crankshaft                                                      
          CNC-machined piston                                                  
          Oversized knife edged aluminium connecting rod w/double bushings     
          LRP guarantees this engine to be free from defects in material and   
            workmanship for 90 days (non-European countries only) from the     
            original date of purchase.                                         
                                                                               
INCLUDES: ZR.28R Spec. 3 Nitro Engine with Glow Plug and Instructions          
                                                                               
REQUIRES: Fuel: Car blend fuel w/25% nitro content, do not exceed 36% nitro    
            content                                                            
          Air filter, glow starter, and track equipment                        
                                                                               
SPECS:    RPM: 33,500 max.                                                     
          Displacement: .28 cu in (4.59ccm)                                    
          Bore: 18.5mm                                                         
          Stroke: 17mm                                                         
          Max Power: 3.89HP                                                    
          Weight: 15.9oz (450g)                                                
          Carburetor Settings:                                                 
            Mid Range: 3.75 turns open                                         
            Main Speed Needle: 3.75 turns open                                 
            Idle Screw: Should be open 0.5 - 1mm, turn clockwise for higher    
            idle speed, counterclockwise for lower idle speed                  
          Height from crankcase bottom /top of cylinder head:                  
          Height from mounting tab bottom/top of cylinder head:                
          Width at Mounting Tabs: